S7-400 414-2DP DP网掉线问题，DP网上挂了70多个子站，整网有2个中继，网络瞬间断又能恢复，现把诊断文件传上，盼高手回答。。
Diagnostic buffer of module CPU 414-2 DP

Order No./ Des cription Component Version
6ES7 414-2XG03-0AB0 Hardware 5
- - - Firmware V 3.0.0

Rack: 0
Slot: 3
Event 1 of 120: Event ID 16# 3842
Module OK
Module type: Distributed I/0s
Input address: 8160
User information available
Diagnostic interrupt from substitute
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 26
External error, Outgoing event
10:39:58.796 AM 11/24/2012


Event 2 of 120: Event ID 16# 3842
Module OK
Module type: Distributed I/0s
Input address: 8162
User information available
Diagnostic interrupt from substitute
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 26
External error, Outgoing event
10:39:10.746 AM 11/24/2012


Event 3 of 120: Event ID 16# 3942
Module problem or maintenance necessary
Module type: Distributed I/0s
Input address: 8162
User information available
Diagnostic interrupt from substitute
Module/submodule fault
External module error
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 26
External error, Incoming event
10:39:10.745 AM 11/24/2012


Event 4 of 120: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 52
DP master system ID: 1
Log. base address of the DP slave: Input address: 8162
Log. base address of the DP master: 8191
Requested OB: Rack failure OB (OB86)
Priority class: 26
External error, Outgoing event
10:39:10.744 AM 11/24/2012


Event 5 of 120: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, word access, access address: 376
process image partition no.: 0
not user relevant(Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 26
External error, Outgoing event
10:39:10.709 AM 11/24/2012


Event 6 of 120: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, double-word access, access address: 372
process image partition no.: 0
not user relevant(Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 26
External error, Outgoing event
10:39:10.709 AM 11/24/2012


Event 7 of 120: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, double-word access, access address: 368
process image partition no.: 0
not user relevant(Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 26
External error, Outgoing event
10:39:10.709 AM 11/24/2012


Event 8 of 120: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, double-word access, access address: 364
process image partition no.: 0
not user relevant(Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 26
External error, Outgoing event
10:39:10.708 AM 11/24/2012


Event 9 of 120: Event ID 16# 38B3
I/O access error when updating the process image input table leaving state
P area, double-word access, access address: 360
process image partition no.: 0
not user relevant(Z1): 2942
Requested OB: Program execution error OB (OB85)
Priority class: 26
External error, Outgoing event
10:39:10.708 AM 11/24/2012





Event 120 of 120: Event ID 16# 2943
I/O access error, writing
P area, double-word access, Access address: 282
FC number: 18
Module address: 24
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
10:39:10.473 AM 11/24/2012